Multi-channel integrating sphere
US6424413B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/556
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrating sphere, and an integrating sphere-based reflectance colorimeter/spectrophotometer for the measurement of color and appearance, having multiple receivers capable of concurrently receiving optical radiation scattered/reflected from a diffusely illuminated sample surface, with the capability of multiple measurement modes (e.g., multiple specular component excluded (SCE), SCE and specular component included (SCI), multiple SCI), multiple areas-of-view for a given measurement mode, multiple viewing angles per measurement mode, and combinations thereof. An embodiment of the invention includes two SCI receivers and two SCE receivers, each disposed at an equal viewing angle relative to the sample surface. For each viewing mode, two sample areas-of-view are provided. The SCE receivers are opposite each other, such that the specular component of each SCE receiver is excluded by the port of the other SCE receiver. The receivers provide the collected light reflected from the sample to a detector which preferably is provided by multiple spectrometers or a single spectrometer having multichannel capability to preferably sense the light from each receiver in parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.